#!/bin/sh
# Copyright (C) 2011 O.S. Systems Software LTDA.
# Licensed on MIT

rootfs_enabled() {
    return 0
}

rootfs_run() {
        if [ -z "$ROOTFS_DIR" ]; then
            return
        fi
    C=0
    delay=${bootparam_rootdelay:-1}
    timeout=${bootparam_roottimeout:-5}
    while [ ! -d $ROOTFS_DIR/dev ]; do
        if [ $(( $C * $delay )) -gt $timeout ]; then
            fatal "root '$bootparam_root' doesn't exist or does not contain a /dev."
        fi

        if [ -n "$bootparam_root" ]; then
            debug "No e2fs compatible filesystem has been mounted, mounting $bootparam_root..."

            if [ "`echo ${bootparam_root} | cut -c1-5`" = "UUID=" ]; then
                root_uuid=`echo $bootparam_root | cut -c6-`
                bootparam_root="/dev/disk/by-uuid/$root_uuid"
            fi

            if [ "`echo ${bootparam_root} | cut -c1-9`" = "PARTUUID=" ]; then
                root_uuid=`echo $bootparam_root | cut -c10-`
                bootparam_root="/dev/disk/by-partuuid/$root_uuid"
            fi

            if [ "`echo ${bootparam_root} | cut -c1-6`" = "LABEL=" ]; then
                root_label=`echo $bootparam_root | cut -c7-`
                bootparam_root="/dev/disk/by-label/$root_label"
            fi

            if [ "${bootparam_root}" = "/dev/nfs" ]; then
                bootparam_rootfstype="nfs"
                bootparam_root=`echo $bootparam_nfsroot | cut -f1 -d","`
                bootparam_nfsopts=`echo $bootparam_nfsroot | cut -f2- -d","`
            fi

            if [ -e "$bootparam_root" ] || [ "${bootparam_rootfstype}" = "nfs" ]; then
                flags=""
                if [ -n "$bootparam_ro" ] && ! echo "$bootparam_rootflags" | grep -w -q "ro"; then
                    if [  -n "$bootparam_rootflags" ]; then
                        bootparam_rootflags="$bootparam_rootflags,"
                    fi
                    bootparam_rootflags="${bootparam_rootflags}ro"
                fi
                if [ -n "$bootparam_nfsopts" ]; then
                    if [  -n "$bootparam_rootflags" ]; then
                        bootparam_rootflags="$bootparam_rootflags,"
                    fi
                    bootparam_rootflags="${bootparam_rootflags}${bootparam_nfsopts}"
                fi
                if [ -n "$bootparam_rootflags" ]; then
                    flags="$flags -o$bootparam_rootflags"
                fi
                if [ -n "$bootparam_rootfstype" ]; then
                    flags="$flags -t$bootparam_rootfstype"
                fi
                mount $flags $bootparam_root $ROOTFS_DIR
                if [ -d $ROOTFS_DIR/dev ]; then
                    break
                else
                    # It is unlikely to change, but keep trying anyway.
                    # Perhaps we pick a different device next time.
                    umount $ROOTFS_DIR
                    fi
                fi
        fi
        debug "Sleeping for $delay second(s) to wait root to settle..."
        sleep $delay
        C=$(( $C + 1 ))
    done
}
